Abstract
Poly(propylene carbonate maleate) (PPCMA) was successfully synthesized from carbon dioxide with propylene oxide and maleic anhydride using supported zinc glutarate as catalyst. The PPCMA can be readily cross-linked using dicumyl peroxide (DCP) as a cross-linking agent. The gel content, thermal performance and mechanical properties of the cross-linked PPCMA were then investigated. The results showed that the gel content increased with increasing DCP content and reaction temperature. The as-prepared PPCMA showed higher glass transition temperature (Tg) and decomposition temperature compared with uncross-linkable poly(propylene carbonate) (PPC). The introduction of small amount of cross-linkable moiety provides a very effective way to improve the thermal stability and to extend the molecular weight of PPC, consequently extending its application area.
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